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WO2008131994A2 - Procédé d'exploitation d'un moteur hybride - Google Patents

Procédé d'exploitation d'un moteur hybride Download PDF

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Publication number
WO2008131994A2
WO2008131994A2 PCT/EP2008/053301 EP2008053301W WO2008131994A2 WO 2008131994 A2 WO2008131994 A2 WO 2008131994A2 EP 2008053301 W EP2008053301 W EP 2008053301W WO 2008131994 A2 WO2008131994 A2 WO 2008131994A2
Authority
WO
WIPO (PCT)
Prior art keywords
hybrid drive
electric machine
drive
maps
torque
Prior art date
Application number
PCT/EP2008/053301
Other languages
German (de)
English (en)
Other versions
WO2008131994A3 (fr
Inventor
Thomas Huber
Jens-Werner Falkenstein
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2008131994A2 publication Critical patent/WO2008131994A2/fr
Publication of WO2008131994A3 publication Critical patent/WO2008131994A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/48—Drive Train control parameters related to transmissions
    • B60L2240/486—Operating parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1015—Input shaft speed, e.g. turbine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1025—Input torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1022—Input torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1061—Output power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/24—Energy storage means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/84—Data processing systems or methods, management, administration

Definitions

  • the invention relates to a method for operating a hybrid drive, in particular a hybrid drive for a motor vehicle, with at least one electric machine and at least one internal combustion engine as drive machines, wherein the hybrid drive generates a requested desired drive torque while maintaining a desired output of the electric machine becomes.
  • the hybrid drive is designed in particular as a parallel hybrid drive, in which add the torques of the engine and the electric machines and act on a transmission input shaft.
  • torques are to be referred to as shortcuts as moments.
  • the desired drive torque and a target speed of the hybrid drive is formed.
  • Target drive torque and target speed act on the transmission input shaft.
  • the desired drive torque is divided between a drive torque of the internal combustion engine and a drive torque of the electrical machine.
  • the desired torque of the electric machine is corrected. This correction results in a deviation from the
  • the inventive method comprises the following steps: Generating a plurality of maps, in each case one hybrid drive speed and one hybrid drive torque, taking into account at least one selectable criterion, a first drive torque of the electric machine and a second
  • the hybrid drive is in particular a parallel Hybridantheb or operated as a parallel hybrid hybrid drive, in which the first drive torque of the electric machine and the second drive torque of the internal combustion engine together as a hybrid drive torque to a
  • the hybrid drive torque is therefore also referred to as transmission input torque.
  • Each of the characteristic maps assigns the parameters hybrid drive rotational speed and hybrid drive torque according to the criterion assigned to the characteristic map to a first drive torque of the electric machine and / or a second drive torque of the internal combustion engine.
  • the map thus determines the torque distribution of the hybrid drive torque to the electric machine and the engine according to the criterion.
  • a selection of one of the maps is based on the electrical setpoint line. In this case, that of the maps is selected in which the setpoint line is maintained or not fallen below.
  • the hybrid drive is operated with the torque distribution resulting from the selected characteristic map between the internal combustion engine and the electrical machine.
  • the discrete values of the maps are supplemented by interpolation and / or extrapolation.
  • the interpolation or extrapolation takes place on the basis of the nominal electrical power.
  • a low-pass filtering of the maps is performed to change the ratio of first and second drive torque (map output) for small changes in hybrid drive speed and / or hybrid drive torque (map inputs) at the expense of Limit optimization potential.
  • the maps are particularly designed so that for each combination of hybrid drive speed and hybrid drive torque, the first drive torque (for the electric machine) is created.
  • the second drive torque (of the internal combustion engine) results from the difference between the hybrid drive torque and the first drive torque.
  • the maps have been created and stored prior to selection and operation.
  • Such a generation in advance enables a calculation time saving implementation of the torque distribution by the use of previously "offline", so regardless of the current operation, created maps, in particular using interpolation rules for adaptation to the current operating situation.
  • the interpolation rule is preferably an extrapolation rule.
  • the selection of one of the maps and the subsequent operation of the hybrid drive is implemented, in particular, in a hybrid drive control unit can be obtained by off-line calculation, without the need for computation time in the control unit, and the selection and inter / extrapolation are based on few additions and multiplication reduced in the control unit.
  • the interpolation or extrapolation takes place on the basis of the nominal electrical power.
  • the desired power of the electric machine is determined as a function of the state of charge of an electrical energy store, in particular a battery.
  • the selection of the map is made such that the current state of charge is adjusted to a desired state of charge.
  • the desired power of the electric machine is determined as a function of an electrical power requirement of aggregates of the hybrid drive and / or motor vehicle.
  • the electrical power requirement of units of the hybrid drive and / or motor vehicle is a.
  • the sum of these aggregates is also referred to as vehicle electrical system.
  • the criterion used is a minimization of the energy consumption of the hybrid drive.
  • the energy consumption of the hybrid drive results from the electrical energy consumption of the electric machine and the fuel consumption of the internal combustion engine.
  • the criterion used is a minimization of the electrical energy consumption of the electrical machine.
  • the criterion used is a minimization of the fuel consumption of the internal combustion engine.
  • the criterion used is a minimization of pollutant emissions of the hybrid drive and / or of the motor vehicle.
  • the total pollutant emissions so the pollutant emissions of the engine and the pollutant emissions to maintain the state of charge of the electrical energy storage is.
  • the criterion used is a minimization of pollutant emissions such that an operation of the hybrid drive is performed only by means of the electric machine.
  • the hybrid drive - if possible due to the target power - only performed by means of the electric machine.
  • one of the maps is selected on the basis of a selectable parameter in a possible use of multiple maps. If the selection results in one of the maps in which the target performance is maintained or not undershot an ambiguous result, so meet several maps this condition, so a selection is made on the basis of a selectable parameter.
  • the selection based on the selectable parameter may be advanced or adjusted to the selection based on the desired power.
  • the parameter may be, for example, minimum fuel consumption, minimum pollutant emissions or a weighted combination thereof.
  • FIG. 1 shows a hybrid drive designed as a parallel hybrid drive
  • Figure 2 is a block diagram of the input and output variables of a
  • the hybrid drive 2 has an internal combustion engine 3 and an electric machine 4 as drive machines 3, 4.
  • the electric machine 4 is connected via a power electronics unit, not shown, with a trained as a rechargeable battery 5 electrical energy storage device 6.
  • the internal combustion engine 3 and the electric machine 4 are arranged serially one after another on an axis 7. A along the axis 7 extending output train 8 of the
  • Internal combustion engine 3 is connected to a drive or output line 9 of the electric machine 4, which is arranged on the output line 8.
  • the output line 8 of the internal combustion engine 3 is therefore at the same time the output train of the hybrid drive 2.
  • the electric machine is a crankshaft electric machine 4, in which the internal combustion engine 3 is entrained undirected during electric driving.
  • a non-illustrated controllable coupling is provided between the engine 3 and the electric machine 4.
  • the power train 8 is connected to a transmission drive train 10 (transmission input train) with a transmission unit 11.
  • the transmission unit 11 has a directly adjoining the transmission drive train 10 controllable clutch 12 and a subsequent to this clutch 12 transmission 13 with a transmission output line 14.
  • the transmission unit 11 converts this hybrid drive speed ⁇ and this hybrid drive torque M according to the ratio into a drive speed and a drive torque of a rotational movement (arrow 16), which are transmitted to drive wheels, not shown.
  • FIG. 2 shows a block diagram of the relationship between the hybrid drive speed co and the hybrid drive torque M applied to the transmission drive train 10 or the power train 8 of the hybrid drive via a selected (x-tes) map K x of a multiplicity of characteristic maps Ki... K N with a first Drive torque M ED, soii- The selection of the selected
  • a second drive torque of the internal combustion engine 3 is obtained by forming the difference between the hybrid drive torque M and the first drive torque M ED, soii the electric machine 4.
  • FIG. 3 shows a particularly simple combination of the input and output variables of a characteristic diagram.
  • this map only the hybrid drive speed co with the target power P e , S oi ⁇ linked, wherein the first drive torque M ED, soii of the electric machine 4 results.
  • the control unit selects for a requested desired drive torque Msoii taking into account the desired power P e , S oi ⁇ the electric machine 4, in particular for maintaining a predetermined state of charge of the electrical energy storage 6, one of the maps Ki, ..., K N and then controls the drive machines 3, 4 of the hybrid drive 2 in accordance with the drive torque MED, soii, M Eng , soii resulting from the selected (x th) map K x .
  • Optimization goal for example, minimum fuel consumption, minimum pollutant emissions or a combination thereof
  • G optimal torque distribution
  • the interpolation rule is supplemented by an extrapolation rule which covers the case of input signals co, M outside predetermined limits electric driving turn N two-dimensional maps Ki, ..., K N and an interpolation or extrapolation rule used that the used for the torque distribution interpolation or Extrapolation rule corresponds. Even so, a three-dimensional relationship between hybrid drive speed ⁇ , hybrid drive torque M and electrical target power P e , S oi ⁇ mapped.
  • the advantage here is that the total of 2 ⁇ N required maps K can be obtained by an offline calculations, without the need for calculation time in the control unit.
  • the evaluation of the three-dimensional relationships can be reduced to a few additions and / or multiplications in the control unit by using the 2 ⁇ N maps K and the interpolation rule.
  • the interpolation or extrapolation takes place on the basis of the nominal electrical power P e, so ii.
  • a low-pass filtering of the characteristic maps K can be carried out in order to limit the changes of the characteristic map outputs MED, SO, M E ng, soi ⁇ for small changes in the characteristic field inputs ⁇ , M at the expense of the optimization potential.
  • the number N of characteristic maps K can be freely selected, with better utilization of the optimization potential for larger N without having to resort to a computing time of intensive online calculation in the control unit.
  • the method described here shows a possibility of generating the decision on purely electric driving from the same optimization method as in torque distribution.
  • both the speed co of the engine 3, the speed co of the electric machine 4 and the hybrid drive speed ⁇ (transmission input speed) are equal.
  • the basis of the torque distribution is the minimization of the criterion G referred to as the quality criterion, in which the desired operating point of the internal combustion engine 3, the desired operating point of the electric machine 4, the fuel consumption and the electrical power consumption as a function of the desired operating points, and a conversion factor ⁇ between fuel consumption and electrical Take power.
  • the criterion G can take the following form, for example:
  • the modified criterion G * corresponds to the original criterion G without consideration of the internal combustion engine component.
  • Variations within the criterion G and thus also in G * can be used to generate many characteristic field triples K op t, K e and K cos t.
  • Each of these characteristic field triples is assigned an electric power P e , K , which corresponds to an average electric power when using the characteristic triplet on a selection of operating points (M, ⁇ ), which are respectively set for a time t:
  • the selection of operating points is carried out so that the operating points relevant in driving operation are sufficiently represented.
  • the operating points occurring during a certification cycle can be used here.
  • K is a three-dimensional relationship between hybrid drive speed, ⁇ , hybrid drive torque M and electrical target power P e , S oi ⁇ given, for example, for optimal torque distribution or optimal decision for electric driving is used.
  • N 3 from the existing map triplets and stored in the control unit.
  • low pass filtering of the maps may be performed to limit the change of the map outputs for small changes in the map inputs at the expense of the optimization potential.
  • hybrid drive speed ⁇ and electrical target power P e , SO ⁇ can from the maps, the torque distribution to the first and second Aufhebungsoment MEng, soii, M E D, soii by interpolation between the individual maps K op t , n be determined with the independent variable of the target power P e , SO ⁇ . It is possible to use here either a linear interpolation or a "nearest neighbor" interpolation of the desired power P e, SO ⁇ between the individual electrical powers P e , K, n. The interpolation factor obtained therefrom interpolates between the individual characteristic diagrams K op t, n -.
  • the decision for electric driving becomes dependent on the individual characteristic diagrams K e, n speed of the hybrid drive torque M, the hybrid drive speed ⁇ and the electrical target power P e , S oi ⁇ generated. This results in a change in the desired power P e, So i ⁇ to a change in the torque distribution.
  • the new moment distribution is an optimal solution to the original optimization problem when J
  • the decision for electric driving follows the same procedure. This ensures that the operating mode is always requested, which is optimal according to the specified criterion G or G * .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

La présente invention concerne un procédé d'exploitation d'un moteur hybride, et notamment d'un moteur hybride pour véhicule automobile dont le groupe moteur réunit au moins un moteur électrique et au moins un moteur thermique, le moteur hybride délivrant un couple moteur à la valeur de consigne demandée tout en conservant une valeur de consigne pour le rendement du moteur électrique. Le procédé de l'invention comporte donc plusieurs étapes. On commence par produire plusieurs courbes caractéristiques, correspondant chacune à un régime et à un couple moteur du moteur hydride en fonction d'un premier couple moteur du moteur électrique et d'un deuxième couple moteur du moteur thermique, en tenant compte au moins d'un critère au choix. On sélectionne ensuite celle des courbes caractéristiques pour laquelle on arrive à tenir au moins le rendement demandé. Enfin, on fait fonctionner le moteur hybride en utilisant les couples moteurs découlant de la courbe caractéristique sélectionnée.
PCT/EP2008/053301 2007-04-27 2008-03-19 Procédé d'exploitation d'un moteur hybride WO2008131994A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007019989A DE102007019989A1 (de) 2007-04-27 2007-04-27 Verfahren zum Betreiben eines Hybridantriebs
DE102007019989.0 2007-04-27

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WO2008131994A2 true WO2008131994A2 (fr) 2008-11-06
WO2008131994A3 WO2008131994A3 (fr) 2009-02-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008058809A1 (de) * 2008-11-24 2010-05-27 EMPA Eidgenössische Materialprüfungs-und Forschungsanstalt Verfahren zum Betreiben einer Antriebseinheit eines Fahrzeugs
US20130332015A1 (en) * 2010-09-04 2013-12-12 Clement Dextreit Controller and method of control of a hybrid electric vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011135910A1 (fr) * 2010-04-26 2011-11-03 本田技研工業株式会社 Dispositif de commande de transmission et procédé de commande de transmission
DE102012216998A1 (de) * 2012-09-21 2014-03-27 Zf Friedrichshafen Ag Verfahren zum Betreiben eines Hybridantriebsstrangs eines Fahrzeugs
DE102014214431A1 (de) * 2014-07-23 2016-01-28 Robert Bosch Gmbh Verfahren und Vorrichtung zum Ermitteln einer Sollbetriebsgröße einer Brenn-kraftmaschine
DE102015006820A1 (de) 2015-05-22 2016-11-24 Man Truck & Bus Ag Verfahren zur Auswahl einer Betriebsart eines Hybridfahrzeugs
FR3039116B1 (fr) * 2015-07-24 2017-07-21 Ifp Energies Now Procede et systeme de commande d'un systeme de propulsion hybride optimisant la consommation de carburant et les emissions polluantes
DE102022000227A1 (de) 2022-01-22 2023-07-27 Deutz Aktiengesellschaft Verfahren zum Betrieb eines Hybrid-Antriebsstrangs

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